A car moving with speed 72 km/hrs. The speed of the car in m/s is
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Answer:
The speed of the car is 72km/h
=72×
18
5
=20m/s
The distance travelled by car in 10s
=10×20=200m
Hence, the distance travelled by sound in reaching the hill and coming back to the moving driver
=1800+(1800−200)
=3400m
So, the speed of sound =
10
3400
=340m/s
Answered by
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The speed of a car is 72 km/h. ∴ The speed of the car (expressed in m/s) is 20 m/s.
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